10.3/linprocfs-proc-pid-stat-numthreads.diff

Add 'numthreads' field in proc/<pid>/stat that available since Linux
2.6.0-test8.

diff -ru --exclude-from freebsd-src-diff-exclude-names /var/tmp/freebsd-10.3-src/usr/src/sys/compat/linprocfs/linprocfs.c freebsd-10.3/usr/src/sys/compat/linprocfs/linprocfs.c
--- /var/tmp/freebsd-10.3-src/usr/src/sys/compat/linprocfs/linprocfs.c	2016-03-25 09:09:43.000000000 +0800
+++ freebsd-10.3/usr/src/sys/compat/linprocfs/linprocfs.c	2019-03-12 14:14:06.090279460 +0800
@@ -661,7 +667,7 @@
 	PS_ADD("cstime",	"%ld",	TV2J(&kp.ki_rusage_ch.ru_stime));
 	PS_ADD("priority",	"%d",	kp.ki_pri.pri_user);
 	PS_ADD("nice",		"%d",	kp.ki_nice); /* 19 (nicest) to -19 */
-	PS_ADD("0",		"%d",	0); /* removed field */
+	PS_ADD("numthreads",	"%d",	kp.ki_numthreads); /* >= 2.6 */
 	PS_ADD("itrealvalue",	"%d",	0); /* XXX */
 	PS_ADD("starttime",	"%lu",	TV2J(&kp.ki_start) - TV2J(&boottime));
 	PS_ADD("vsize",		"%ju",	P2K((uintmax_t)kp.ki_size));